Steam-generator.



No. 70|,a95.. K Pannen lune lo, |902.

J. J. KlLsHA-w.

' STEAM GENERATOR.

(Application led Jl'xne 26, 1901.) (NQ Modal.) 3 Sheets-Sheet I.

wnNEssEs: INVENTOR,

@y i l /Mf 9M 9% BY" v /lz ATTO NEYS YN: Nonms PETERS w., PHOTO-umu.,WASHINQTD". D. c.

No. 70|,895. Patented lunav l0, |902.

-. J. J. KILSHAW.v

STEAM GENERATOR.

(Applcation led June 26, 1901.) (No Model) 3 sngets-sheet 2.

NESSE INVENTOR Q m. W e. m.. Y m m Ai m Y m No. 7o|,a95. Patented :une|o`, |902.

, J. J. luLsHAw.l Y

STEAM GENERATOR.

(Application 'mea June 26, 1901.) (Nq Model.) s sheets-sheet 3,

1u: humus FEVER: 60:. Pnmau'mu.. WASHINGTON. D. C,

Nrren STATES "PATENT OFFICE.

JOHN J. KILSHAW, OF BROOKLYN, NEWv YORK.

STEAM-GENERATOR.

SPECIFICATION formingrpar't Of Leiters Patent 0. 701,895, dated June 10,1902.

Application filed Tune 26, 1901. Serial No. 66.144. (No model.)

To @ZZ whom it may conocrm' Be it known thatI, JOHN'J. KILSHAW, acitizen of the United States of America, and a resident of the city ofNew York', borough of Brooklyn, county of Kings, and State of New York,have invented certain new and useful Improvements in Steam-Generators,of which the following is a specication, reference being had to theaccompanying'd-rawings, forming a part thereof.

My invention relates to improvements in steam-generators, andparticularly to that class of steam-generators known as tubular orwater-tube boilers. j

My improved steam-generator comprises a casing 'havingwithin' it asuitable furnacel and longitudinal water-drums arranged one' and are'preferably curved throughout their entire length'v upon arcs of circles.The curved generating-tubes are further preferably equally disposed uponopposite sides of the said generating-tubes, whereby a balance ofpressure and strain is effected. Longitudinal dividing-walls areprovided which are located within the nests of tubes connecting thesteam and water drums and divide the space within the casing into acombustion-chamber and two return passages or lflues.

The objects of my invention are generally to improve steam-generators ofthis type; to construct a generatorin which there are long passages forthe products' of combustion and in which the generating-tubes are atright angles to the path of said products of combustion throughout theirpassage; to provide a construction whereby certain of thegenerating-tubes between the steam and water drums, being straight, willthemselves form stays between the said drums, and the othergenerating-tubes arranged on opposite sides, being curved, will providefor the necessary hereinafter. I

shown.

contraction and expansion; to equalize or balance the strain andpressure by equally disposing the curved generating-tubeson oppositesides of the straight generating-tubes;

to provide generating-tubes in which there are no sharp 'bends atwhich'fscale maydeposit, and to providev a vconstruction which shall beeasy to manufacture, 'simple toassemble, and easy to clean and keep inrepair.

My invention further consists in certain noveldetails of constructionand combination of parts, as shall hereinafter more fully appear, andother advantagesA will appear -II will nowproceed-to describe asteam-generator embodying my inventionand will then l l point out thenovel features in the claim.

Inl the drawings, Figure 1 lrepresents a transverse section of asteam-generator embodying my invention. Fig. 2 is aview in centrallongitudinal section of the f same. Fig. 3 is a view in front elevation,with the casing partially broken away at one side, of a'steam-generatorembodying my invention, but having a structure slightly modilied fromthat shown in Figs. l and 2. Y

In the embodiment of my inventionyherein illustratedI have shownthelordinary form of grate 1 andbridge 2, at the rear. thereof, to formthe lire-box of the furnacepwhicl is in tended to deliver heat fromburning coal;

Vbutit is within the purview of this invention to employ any form offurnace or heating medium, as may be desired. For instance, I

may burn gas or oil, if desired, instead of as is shown in the structureof Figs. 1 and 2. f

I provide a plurality of generating-tubes 5, connecting the steam andwater drums, as

These generating tubes 5 are arranged in two nests, each nest connectingone of the said water-drums 3 with the steam-drum 4. Each nest comprisesa series or rows of IOO tubes, and for the purpose of manufacture andassemblage these tubes preferably connect with the said drums upon linessubstantially radial thereof. The said tubes may be expanded into thedrums in the usual manner, and it will be noted that the said tubes areall either straight or have a uniform and gentle curve throughout theirlength, so that there are no sharp bends therein at which scale may bedeposited.

I provide two longitudinal dividing-walls or partitions 6, each of saiddividing-walls being located within one of the nests of the tubes. Acasing 7 surrounds the drums, generatingtubes, and furnace, and the saiddividingwalls or partitions extend clear to the front wall of saidcasing, but do not extend entirely to the rear wall thereof. The saiddividingwalls or partitions divide the space inclosed within the casingsubstantially into a cornbustion-chamber, which I have designated, as awhole, by the reference character 8, and two return iiues or passages 9.The return fines or passages 9 connect with uptake connections 10,leading to a flue ll, which may connect with a suitable stack.

I have provided the drums with suitable manholes at their ends, throughwhich access may be had to the interior thereof, and I have providedsuitable doors in the casing by which access may be had to the saidmanholes, to the furnace, to the ash-pit, and to the other parts of thegenerator.

In locating the dividing-Walls or partitions G within the nests ofgenerating-tubes it will be seen that I have not only divided the spaceinclosed by the casing into a combustionchamber and two return flues orpassages, but I have thereby so arranged that a certain number of thesaid generating-tubes shall be within the combustion-chamber and shallreceive the direct action of the products of combustion, while certainothers of the tubes will be located within the return-passages and shallreceive the action of the products of combustion only upon their returnthrough the said return-passages. By this arrangement I obtain acomplete and thorough circulation ofthe water within the generator whilegiving it the least movement in such circulation. It will further beseen that the generating-tubes are all at right angles to the path ofthe products of combustion, and hence are in the most eifectivepositions for receiving the heat therefrom.

It is obvious that modifications of my invention may be resorted towithout departing from the spirit and scope thereof, and I do not,therefore, desire to be limited only to the precise construction shown.

lVhat I claim is- In a steam-generator, the combination with a casinghaving within it a furnace, of waterdrums at the sides of the furnace, asteamdrum above said Water-drums, said steamdrum comprising two membersarranged side by side, and out of water communication with each otherexcept through the generating-tubes and water-drums, generating-tubesconnecting the steam with the Water-drums, and two longitudinaldividing-walls each located within the nest of generating-tubesconnecting one of the said water-drums with one of the said steam-drummembers, said longitudinal dividing-walls dividing the space into acombustion-chamber and two return-passages.

JOHN J. KILSHAVV.

XVitnesses:

D. HOWARD IIArWooD, A. Il. PERLES.

